<ui:composition xmlns="http://www.w3.org/1999/xhtml"
xmlns:ui="http://java.sun.com/jsf/facelets"
template="/WEB-INF/templates/MenuTemplate.xhtml">

    <ui:param name="pageName" value="index" />
    <ui:define name="MenuTemplate">
        My content
    </ui:define>
PRUBEA
</ui:composition>